Vulnerability in Avast Avg Antivirus
CVE-2023-5760
A time-of-check to time-of-use (TOCTOU) bug in handling of IOCTL (input/output control) requests. This TOCTOU bug leads to an out-of-bounds write vulnerability which can be further exploited, allowing an attacker to gain full local privilege escalation on the system.This issue affects Avast/Avg Antivirus: 23.8.
Vulnerability class: TOCTOU (Time-of-Check to Time-of-Use)
EPSS: 0.002 (8.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H.
Affected products
- Avast Avg_antivirus — versions 23.8
- Avast/avg Antivirus — versions 23.8
Weakness classification (CWE)
References
- security@nortonlifelock.com (Third Party Advisory)
Frequently asked questions
- What is CVE-2023-5760?
- CVE-2023-5760 is a high-severity vulnerability in Avast Avg Antivirus, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 8.2/10. Published 2023-11-08.
- How severe is CVE-2023-5760?
- High severity. CVSS v3 base score is 8.2 out of 10.